diff --git a/packages/browser/src/helpers/toPublicKeyCredentialDescriptor.ts b/packages/browser/src/helpers/toPublicKeyCredentialDescriptor.ts
index e19bbd9d..1eca3321 100644
--- a/packages/browser/src/helpers/toPublicKeyCredentialDescriptor.ts
+++ b/packages/browser/src/helpers/toPublicKeyCredentialDescriptor.ts
@@ -2,6 +2,7 @@ import type {
   AuthenticatorTransport,
   PublicKeyCredentialDescriptor,
   PublicKeyCredentialDescriptorJSON,
+  PublicKeyCredentialType,
 } from '../types/index.ts';
 import { base64URLStringToBuffer } from './base64URLStringToBuffer.ts';
 
@@ -13,11 +14,7 @@ export function toPublicKeyCredentialDescriptor(
   return {
     ...descriptor,
     id: base64URLStringToBuffer(id),
-    /**
-     * `descriptor.transports` is an array of our `AuthenticatorTransportFuture` that includes newer
-     * transports that TypeScript's DOM lib is ignorant of. Convince TS that our list of transports
-     * are fine to pass to WebAuthn since browsers will recognize the new value.
-     */
     transports: descriptor.transports as AuthenticatorTransport[],
+    type: descriptor.type as PublicKeyCredentialType,
   };
 }
diff --git a/packages/browser/src/methods/startAuthentication.ts b/packages/browser/src/methods/startAuthentication.ts
index 2a95e56f..5260e38a 100644
--- a/packages/browser/src/methods/startAuthentication.ts
+++ b/packages/browser/src/methods/startAuthentication.ts
@@ -105,7 +105,10 @@ export async function startAuthentication(
   // Wait for the user to complete assertion
   let credential;
   try {
-    credential = (await navigator.credentials.get(getOptions as globalThis.CredentialRequestOptions)) as AuthenticationCredential;
+    credential = (await navigator.credentials.get(
+      // TODO: Newer versions of Deno require this casting, revisit once we're using Deno 2.6+
+      getOptions as globalThis.CredentialRequestOptions,
+    )) as AuthenticationCredential;
   } catch (err) {
     throw identifyAuthenticationError({ error: err as Error, options: getOptions });
   }
diff --git a/packages/browser/src/methods/startRegistration.ts b/packages/browser/src/methods/startRegistration.ts
index a601526a..918be719 100644
--- a/packages/browser/src/methods/startRegistration.ts
+++ b/packages/browser/src/methods/startRegistration.ts
@@ -1,5 +1,4 @@
 import type {
-  AuthenticatorTransportFuture,
   CredentialCreationOptions,
   PublicKeyCredentialCreationOptions,
   PublicKeyCredentialCreationOptionsJSON,
@@ -78,7 +77,10 @@ export async function startRegistration(
   // Wait for the user to complete attestation
   let credential;
   try {
-    credential = (await navigator.credentials.create(createOptions as globalThis.CredentialCreationOptions)) as RegistrationCredential;
+    credential = (await navigator.credentials.create(
+      // TODO: Newer versions of Deno require this casting, revisit once we're using Deno 2.6+
+      createOptions as globalThis.CredentialCreationOptions,
+    )) as RegistrationCredential;
   } catch (err) {
     throw identifyRegistrationError({ error: err as Error, options: createOptions });
   }
@@ -90,7 +92,7 @@ export async function startRegistration(
   const { id, rawId, response, type } = credential;
 
   // Continue to play it safe with `getTransports()` for now, even when L3 types say it's required
-  let transports: AuthenticatorTransportFuture[] | undefined = undefined;
+  let transports: string[] | undefined = undefined;
   if (typeof response.getTransports === 'function') {
     transports = response.getTransports();
   }
diff --git a/packages/browser/src/types/dom.ts b/packages/browser/src/types/dom.ts
index 38eb272e..d3ad8e0e 100644
--- a/packages/browser/src/types/dom.ts
+++ b/packages/browser/src/types/dom.ts
@@ -136,6 +136,12 @@ export interface PublicKeyCredentialDescriptor {
     type: PublicKeyCredentialType;
 }
 
+export interface PublicKeyCredentialDescriptorJSON {
+    id: Base64URLString;
+    transports?: string[];
+    type: string;
+}
+
 export interface PublicKeyCredentialParameters {
     alg: COSEAlgorithmIdentifier;
     type: PublicKeyCredentialType;
@@ -592,6 +598,7 @@ export interface RsaKeyGenParams extends Algorithm {
 
 export type AttestationConveyancePreference = "direct" | "enterprise" | "indirect" | "none";
 export type AuthenticatorTransport = "ble" | "hybrid" | "internal" | "nfc" | "usb";
+export type Base64URLString = string;
 export type COSEAlgorithmIdentifier = number;
 export type ResidentKeyRequirement = "discouraged" | "preferred" | "required";
 export type UserVerificationRequirement = "discouraged" | "preferred" | "required";
diff --git a/packages/browser/src/types/index.ts b/packages/browser/src/types/index.ts
index 915f8bd7..e565d1c3 100644
--- a/packages/browser/src/types/index.ts
+++ b/packages/browser/src/types/index.ts
@@ -16,10 +16,11 @@ import type {
   AuthenticatorAttachment,
   AuthenticatorAttestationResponse,
   AuthenticatorSelectionCriteria,
+  Base64URLString,
   COSEAlgorithmIdentifier,
   PublicKeyCredential,
   PublicKeyCredentialCreationOptions,
-  PublicKeyCredentialDescriptor,
+  PublicKeyCredentialDescriptorJSON,
   PublicKeyCredentialParameters,
   PublicKeyCredentialRequestOptions,
   PublicKeyCredentialRpEntity,
@@ -36,6 +37,7 @@ export type {
   AuthenticatorAttestationResponse,
   AuthenticatorSelectionCriteria,
   AuthenticatorTransport,
+  Base64URLString,
   COSEAlgorithmIdentifier,
   CredentialCreationOptions,
   CredentialRequestOptions,
@@ -43,6 +45,7 @@ export type {
   PublicKeyCredential,
   PublicKeyCredentialCreationOptions,
   PublicKeyCredentialDescriptor,
+  PublicKeyCredentialDescriptorJSON,
   PublicKeyCredentialParameters,
   PublicKeyCredentialRequestOptions,
   PublicKeyCredentialRpEntity,
@@ -89,15 +92,6 @@ export interface PublicKeyCredentialRequestOptionsJSON {
   extensions?: AuthenticationExtensionsClientInputs;
 }
 
-/**
- * https://w3c.github.io/webauthn/#dictdef-publickeycredentialdescriptorjson
- */
-export interface PublicKeyCredentialDescriptorJSON {
-  id: Base64URLString;
-  type: PublicKeyCredentialType;
-  transports?: AuthenticatorTransportFuture[];
-}
-
 /**
  * https://w3c.github.io/webauthn/#dictdef-publickeycredentialuserentityjson
  */
@@ -111,7 +105,7 @@ export interface PublicKeyCredentialUserEntityJSON {
  * The value returned from navigator.credentials.create()
  */
 export interface RegistrationCredential extends PublicKeyCredentialFuture {
-  response: AuthenticatorAttestationResponseFuture;
+  response: AuthenticatorAttestationResponse;
 }
 
 /**
@@ -163,7 +157,7 @@ export interface AuthenticatorAttestationResponseJSON {
   // Optional in L2, but becomes required in L3. Play it safe until L3 becomes Recommendation
   authenticatorData?: Base64URLString;
   // Optional in L2, but becomes required in L3. Play it safe until L3 becomes Recommendation
-  transports?: AuthenticatorTransportFuture[];
+  transports?: string[];
   // Optional in L2, but becomes required in L3. Play it safe until L3 becomes Recommendation
   publicKeyAlgorithm?: COSEAlgorithmIdentifier;
   publicKey?: Base64URLString;
@@ -190,52 +184,10 @@ export type WebAuthnCredential = {
   publicKey: Uint8Array_;
   // Number of times this authenticator is expected to have been used
   counter: number;
-  // From browser's `startRegistration()` -> RegistrationCredentialJSON.transports (API L2 and up)
-  transports?: AuthenticatorTransportFuture[];
+  // From browser's `startRegistration()` -> RegistrationCredential.response.transports (API L2 and up)
+  transports?: string[];
 };
 
-/**
- * An attempt to communicate that this isn't just any string, but a Base64URL-encoded string
- */
-export type Base64URLString = string;
-
-/**
- * AuthenticatorAttestationResponse in TypeScript's DOM lib is outdated (up through v3.9.7).
- * Maintain an augmented version here so we can implement additional properties as the WebAuthn
- * spec evolves.
- *
- * See https://www.w3.org/TR/webauthn-2/#iface-authenticatorattestationresponse
- *
- * Properties marked optional are not supported in all browsers.
- */
-export interface AuthenticatorAttestationResponseFuture extends AuthenticatorAttestationResponse {
-  getTransports(): AuthenticatorTransportFuture[];
-}
-
-/**
- * A super class of TypeScript's `AuthenticatorTransport` that includes support for the latest
- * transports. Should eventually be replaced by TypeScript's when TypeScript gets updated to
- * know about it (sometime after 4.6.3)
- */
-export type AuthenticatorTransportFuture =
-  | 'ble'
-  | 'cable'
-  | 'hybrid'
-  | 'internal'
-  | 'nfc'
-  | 'smart-card'
-  | 'usb';
-
-/**
- * A super class of TypeScript's `PublicKeyCredentialDescriptor` that knows about the latest
- * transports. Should eventually be replaced by TypeScript's when TypeScript gets updated to
- * know about it (sometime after 4.6.3)
- */
-export interface PublicKeyCredentialDescriptorFuture
-  extends Omit<PublicKeyCredentialDescriptor, 'transports'> {
-  transports?: AuthenticatorTransportFuture[];
-}
-
 /** */
 export type PublicKeyCredentialJSON =
   | RegistrationResponseJSON
diff --git a/packages/server/src/authentication/generateAuthenticationOptions.ts b/packages/server/src/authentication/generateAuthenticationOptions.ts
index 21db84d4..f0d9f8d0 100644
--- a/packages/server/src/authentication/generateAuthenticationOptions.ts
+++ b/packages/server/src/authentication/generateAuthenticationOptions.ts
@@ -1,6 +1,5 @@
 import type {
   AuthenticationExtensionsClientInputs,
-  AuthenticatorTransportFuture,
   Base64URLString,
   PublicKeyCredentialRequestOptionsJSON,
   Uint8Array_,
@@ -27,7 +26,7 @@ export async function generateAuthenticationOptions(
     rpID: string;
     allowCredentials?: {
       id: Base64URLString;
-      transports?: AuthenticatorTransportFuture[];
+      transports?: string[];
     }[];
     challenge?: string | Uint8Array_;
     timeout?: number;
diff --git a/packages/server/src/registration/generateRegistrationOptions.ts b/packages/server/src/registration/generateRegistrationOptions.ts
index 1065c009..12fc23c2 100644
--- a/packages/server/src/registration/generateRegistrationOptions.ts
+++ b/packages/server/src/registration/generateRegistrationOptions.ts
@@ -1,7 +1,6 @@
 import type {
   AuthenticationExtensionsClientInputs,
   AuthenticatorSelectionCriteria,
-  AuthenticatorTransportFuture,
   Base64URLString,
   COSEAlgorithmIdentifier,
   PublicKeyCredentialCreationOptionsJSON,
@@ -94,7 +93,7 @@ export async function generateRegistrationOptions(
     attestationType?: 'direct' | 'enterprise' | 'none';
     excludeCredentials?: {
       id: Base64URLString;
-      transports?: AuthenticatorTransportFuture[];
+      transports?: string[];
     }[];
     authenticatorSelection?: AuthenticatorSelectionCriteria;
     extensions?: AuthenticationExtensionsClientInputs;
diff --git a/packages/server/src/types/dom.ts b/packages/server/src/types/dom.ts
index 38eb272e..d3ad8e0e 100644
--- a/packages/server/src/types/dom.ts
+++ b/packages/server/src/types/dom.ts
@@ -136,6 +136,12 @@ export interface PublicKeyCredentialDescriptor {
     type: PublicKeyCredentialType;
 }
 
+export interface PublicKeyCredentialDescriptorJSON {
+    id: Base64URLString;
+    transports?: string[];
+    type: string;
+}
+
 export interface PublicKeyCredentialParameters {
     alg: COSEAlgorithmIdentifier;
     type: PublicKeyCredentialType;
@@ -592,6 +598,7 @@ export interface RsaKeyGenParams extends Algorithm {
 
 export type AttestationConveyancePreference = "direct" | "enterprise" | "indirect" | "none";
 export type AuthenticatorTransport = "ble" | "hybrid" | "internal" | "nfc" | "usb";
+export type Base64URLString = string;
 export type COSEAlgorithmIdentifier = number;
 export type ResidentKeyRequirement = "discouraged" | "preferred" | "required";
 export type UserVerificationRequirement = "discouraged" | "preferred" | "required";
diff --git a/packages/server/src/types/index.ts b/packages/server/src/types/index.ts
index 915f8bd7..e565d1c3 100644
--- a/packages/server/src/types/index.ts
+++ b/packages/server/src/types/index.ts
@@ -16,10 +16,11 @@ import type {
   AuthenticatorAttachment,
   AuthenticatorAttestationResponse,
   AuthenticatorSelectionCriteria,
+  Base64URLString,
   COSEAlgorithmIdentifier,
   PublicKeyCredential,
   PublicKeyCredentialCreationOptions,
-  PublicKeyCredentialDescriptor,
+  PublicKeyCredentialDescriptorJSON,
   PublicKeyCredentialParameters,
   PublicKeyCredentialRequestOptions,
   PublicKeyCredentialRpEntity,
@@ -36,6 +37,7 @@ export type {
   AuthenticatorAttestationResponse,
   AuthenticatorSelectionCriteria,
   AuthenticatorTransport,
+  Base64URLString,
   COSEAlgorithmIdentifier,
   CredentialCreationOptions,
   CredentialRequestOptions,
@@ -43,6 +45,7 @@ export type {
   PublicKeyCredential,
   PublicKeyCredentialCreationOptions,
   PublicKeyCredentialDescriptor,
+  PublicKeyCredentialDescriptorJSON,
   PublicKeyCredentialParameters,
   PublicKeyCredentialRequestOptions,
   PublicKeyCredentialRpEntity,
@@ -89,15 +92,6 @@ export interface PublicKeyCredentialRequestOptionsJSON {
   extensions?: AuthenticationExtensionsClientInputs;
 }
 
-/**
- * https://w3c.github.io/webauthn/#dictdef-publickeycredentialdescriptorjson
- */
-export interface PublicKeyCredentialDescriptorJSON {
-  id: Base64URLString;
-  type: PublicKeyCredentialType;
-  transports?: AuthenticatorTransportFuture[];
-}
-
 /**
  * https://w3c.github.io/webauthn/#dictdef-publickeycredentialuserentityjson
  */
@@ -111,7 +105,7 @@ export interface PublicKeyCredentialUserEntityJSON {
  * The value returned from navigator.credentials.create()
  */
 export interface RegistrationCredential extends PublicKeyCredentialFuture {
-  response: AuthenticatorAttestationResponseFuture;
+  response: AuthenticatorAttestationResponse;
 }
 
 /**
@@ -163,7 +157,7 @@ export interface AuthenticatorAttestationResponseJSON {
   // Optional in L2, but becomes required in L3. Play it safe until L3 becomes Recommendation
   authenticatorData?: Base64URLString;
   // Optional in L2, but becomes required in L3. Play it safe until L3 becomes Recommendation
-  transports?: AuthenticatorTransportFuture[];
+  transports?: string[];
   // Optional in L2, but becomes required in L3. Play it safe until L3 becomes Recommendation
   publicKeyAlgorithm?: COSEAlgorithmIdentifier;
   publicKey?: Base64URLString;
@@ -190,52 +184,10 @@ export type WebAuthnCredential = {
   publicKey: Uint8Array_;
   // Number of times this authenticator is expected to have been used
   counter: number;
-  // From browser's `startRegistration()` -> RegistrationCredentialJSON.transports (API L2 and up)
-  transports?: AuthenticatorTransportFuture[];
+  // From browser's `startRegistration()` -> RegistrationCredential.response.transports (API L2 and up)
+  transports?: string[];
 };
 
-/**
- * An attempt to communicate that this isn't just any string, but a Base64URL-encoded string
- */
-export type Base64URLString = string;
-
-/**
- * AuthenticatorAttestationResponse in TypeScript's DOM lib is outdated (up through v3.9.7).
- * Maintain an augmented version here so we can implement additional properties as the WebAuthn
- * spec evolves.
- *
- * See https://www.w3.org/TR/webauthn-2/#iface-authenticatorattestationresponse
- *
- * Properties marked optional are not supported in all browsers.
- */
-export interface AuthenticatorAttestationResponseFuture extends AuthenticatorAttestationResponse {
-  getTransports(): AuthenticatorTransportFuture[];
-}
-
-/**
- * A super class of TypeScript's `AuthenticatorTransport` that includes support for the latest
- * transports. Should eventually be replaced by TypeScript's when TypeScript gets updated to
- * know about it (sometime after 4.6.3)
- */
-export type AuthenticatorTransportFuture =
-  | 'ble'
-  | 'cable'
-  | 'hybrid'
-  | 'internal'
-  | 'nfc'
-  | 'smart-card'
-  | 'usb';
-
-/**
- * A super class of TypeScript's `PublicKeyCredentialDescriptor` that knows about the latest
- * transports. Should eventually be replaced by TypeScript's when TypeScript gets updated to
- * know about it (sometime after 4.6.3)
- */
-export interface PublicKeyCredentialDescriptorFuture
-  extends Omit<PublicKeyCredentialDescriptor, 'transports'> {
-  transports?: AuthenticatorTransportFuture[];
-}
-
 /** */
 export type PublicKeyCredentialJSON =
   | RegistrationResponseJSON
diff --git a/packages/types/extract-dom-types.ts b/packages/types/extract-dom-types.ts
index 2e9c301e..0c0b0610 100644
--- a/packages/types/extract-dom-types.ts
+++ b/packages/types/extract-dom-types.ts
@@ -45,6 +45,7 @@ const types = [
   'AuthenticationExtensionsClientInputs',
   'AuthenticationExtensionsClientOutputs',
   'AuthenticatorSelectionCriteria',
+  'Base64URLString',
   'COSEAlgorithmIdentifier',
   'CredentialCreationOptions',
   'CredentialRequestOptions',
@@ -52,6 +53,7 @@ const types = [
   'PublicKeyCredential',
   'PublicKeyCredentialCreationOptions',
   'PublicKeyCredentialDescriptor',
+  'PublicKeyCredentialDescriptorJSON',
   'PublicKeyCredentialParameters',
   'PublicKeyCredentialRequestOptions',
   'PublicKeyCredentialUserEntity',
diff --git a/packages/types/src/dom.ts b/packages/types/src/dom.ts
index 82941cba..59e762ef 100644
--- a/packages/types/src/dom.ts
+++ b/packages/types/src/dom.ts
@@ -128,6 +128,12 @@ export interface PublicKeyCredentialDescriptor {
     type: PublicKeyCredentialType;
 }
 
+export interface PublicKeyCredentialDescriptorJSON {
+    id: Base64URLString;
+    transports?: string[];
+    type: string;
+}
+
 export interface PublicKeyCredentialParameters {
     alg: COSEAlgorithmIdentifier;
     type: PublicKeyCredentialType;
@@ -584,6 +590,7 @@ export interface RsaKeyGenParams extends Algorithm {
 
 export type AttestationConveyancePreference = "direct" | "enterprise" | "indirect" | "none";
 export type AuthenticatorTransport = "ble" | "hybrid" | "internal" | "nfc" | "usb";
+export type Base64URLString = string;
 export type COSEAlgorithmIdentifier = number;
 export type ResidentKeyRequirement = "discouraged" | "preferred" | "required";
 export type UserVerificationRequirement = "discouraged" | "preferred" | "required";
diff --git a/packages/types/src/index.ts b/packages/types/src/index.ts
index ae69b9c0..12a5857d 100644
--- a/packages/types/src/index.ts
+++ b/packages/types/src/index.ts
@@ -6,10 +6,11 @@ import type {
   AuthenticatorAttachment,
   AuthenticatorAttestationResponse,
   AuthenticatorSelectionCriteria,
+  Base64URLString,
   COSEAlgorithmIdentifier,
   PublicKeyCredential,
   PublicKeyCredentialCreationOptions,
-  PublicKeyCredentialDescriptor,
+  PublicKeyCredentialDescriptorJSON,
   PublicKeyCredentialParameters,
   PublicKeyCredentialRequestOptions,
   PublicKeyCredentialRpEntity,
@@ -26,6 +27,7 @@ export type {
   AuthenticatorAttestationResponse,
   AuthenticatorSelectionCriteria,
   AuthenticatorTransport,
+  Base64URLString,
   COSEAlgorithmIdentifier,
   CredentialCreationOptions,
   CredentialRequestOptions,
@@ -33,6 +35,7 @@ export type {
   PublicKeyCredential,
   PublicKeyCredentialCreationOptions,
   PublicKeyCredentialDescriptor,
+  PublicKeyCredentialDescriptorJSON,
   PublicKeyCredentialParameters,
   PublicKeyCredentialRequestOptions,
   PublicKeyCredentialRpEntity,
@@ -79,15 +82,6 @@ export interface PublicKeyCredentialRequestOptionsJSON {
   extensions?: AuthenticationExtensionsClientInputs;
 }
 
-/**
- * https://w3c.github.io/webauthn/#dictdef-publickeycredentialdescriptorjson
- */
-export interface PublicKeyCredentialDescriptorJSON {
-  id: Base64URLString;
-  type: PublicKeyCredentialType;
-  transports?: AuthenticatorTransportFuture[];
-}
-
 /**
  * https://w3c.github.io/webauthn/#dictdef-publickeycredentialuserentityjson
  */
@@ -101,7 +95,7 @@ export interface PublicKeyCredentialUserEntityJSON {
  * The value returned from navigator.credentials.create()
  */
 export interface RegistrationCredential extends PublicKeyCredentialFuture {
-  response: AuthenticatorAttestationResponseFuture;
+  response: AuthenticatorAttestationResponse;
 }
 
 /**
@@ -153,7 +147,7 @@ export interface AuthenticatorAttestationResponseJSON {
   // Optional in L2, but becomes required in L3. Play it safe until L3 becomes Recommendation
   authenticatorData?: Base64URLString;
   // Optional in L2, but becomes required in L3. Play it safe until L3 becomes Recommendation
-  transports?: AuthenticatorTransportFuture[];
+  transports?: string[];
   // Optional in L2, but becomes required in L3. Play it safe until L3 becomes Recommendation
   publicKeyAlgorithm?: COSEAlgorithmIdentifier;
   publicKey?: Base64URLString;
@@ -180,52 +174,10 @@ export type WebAuthnCredential = {
   publicKey: Uint8Array_;
   // Number of times this authenticator is expected to have been used
   counter: number;
-  // From browser's `startRegistration()` -> RegistrationCredentialJSON.transports (API L2 and up)
-  transports?: AuthenticatorTransportFuture[];
+  // From browser's `startRegistration()` -> RegistrationCredential.response.transports (API L2 and up)
+  transports?: string[];
 };
 
-/**
- * An attempt to communicate that this isn't just any string, but a Base64URL-encoded string
- */
-export type Base64URLString = string;
-
-/**
- * AuthenticatorAttestationResponse in TypeScript's DOM lib is outdated (up through v3.9.7).
- * Maintain an augmented version here so we can implement additional properties as the WebAuthn
- * spec evolves.
- *
- * See https://www.w3.org/TR/webauthn-2/#iface-authenticatorattestationresponse
- *
- * Properties marked optional are not supported in all browsers.
- */
-export interface AuthenticatorAttestationResponseFuture extends AuthenticatorAttestationResponse {
-  getTransports(): AuthenticatorTransportFuture[];
-}
-
-/**
- * A super class of TypeScript's `AuthenticatorTransport` that includes support for the latest
- * transports. Should eventually be replaced by TypeScript's when TypeScript gets updated to
- * know about it (sometime after 4.6.3)
- */
-export type AuthenticatorTransportFuture =
-  | 'ble'
-  | 'cable'
-  | 'hybrid'
-  | 'internal'
-  | 'nfc'
-  | 'smart-card'
-  | 'usb';
-
-/**
- * A super class of TypeScript's `PublicKeyCredentialDescriptor` that knows about the latest
- * transports. Should eventually be replaced by TypeScript's when TypeScript gets updated to
- * know about it (sometime after 4.6.3)
- */
-export interface PublicKeyCredentialDescriptorFuture
-  extends Omit<PublicKeyCredentialDescriptor, 'transports'> {
-  transports?: AuthenticatorTransportFuture[];
-}
-
 /** */
 export type PublicKeyCredentialJSON =
   | RegistrationResponseJSON